The Swans appeared to be experiencing something of a Europa League hangover in the first period, as Mark Hughes' side clinically took their chances to take a two-goal advantage into the break.

However, Laudrup's men appeared reinvigorated during the second period and two goals from record signing Wilfried Bony and a Nathan Dyer volley looked to have given them a tremendous comeback victory.

But a 96th-minute penalty from Charlie Adam gave the Potters a share of the points, after referee Robert Madley adjudged Wayne Routledge to have handled a Ryan Shawcross header, leaving Laudrup displeased with the officials.

"I said to the players we have to continue and believe in what we are doing at 2-0 down, and it was an absolutely fantastic second half," said Laudrup.

"I have to stand here more frustrated than ever because of a very poor decision.

"I always defend referees and linesmen because they are humans but now I have seen it, there are seven Stoke players inside the box and none of them asking for handball.

"Just one in the stadium saw it and it was the ref.

"I have to be careful. We can't talk about them. We all make mistakes but I can admit I made a mistake and the referee can't.

"It is like they don't exist, they can't speak. I have to be careful what I say or else I get fined another £1,000.

"Refs make mistakes. We all do. But at least admit it. I am so frustrated for my players. We had a five-hour flight to come back on Friday [ having played Russian club Kuban Krasnador in Russia] on Thursday and I am really sorry for them."